Device for attaching window-shades to rollers.



No. 735,540.v PATENTBD AI-1G. 4,1903.

w. H. LYON.-

DEVIGE FOR ATTAGHING WINDOW SHADES T0 ROLLERS. Arrpmnmn 11.31) 93M. 2, 19o2.-

N0 MODEL.

No. 735,540. I

UNITED, STATES Patented August 4, 1903.

PATENT OFFICE.

WILLIAM H. LYON, OF MERIDEN, CONNECTICUT, A SSIGNOR TO THE CHARLES PARKER CO., OF MERIDEN, CONNECTICUT, A CORPO- RATION.

DEVICE FOR ATTACl-llNG WINDOW -S HADES TO ROLLERS.

SPECIFICATION forming part of Letters Patent No. 735,540, dated August 4, 1903. Application filed September 2, 1902. Serial No. 121,812. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. LYON, of Meriden, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Devices for Attaching Window-Shades to Rollers; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a'full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent,

Figure 1, a. perspective view ofa shaderoller with a shade secured thereto with my improved fastening device; Fig. 2, a sectional View thereof; Fig. 3, a perspective view of the fastening device detached and before it has been flattened in the shade-roller; Fig. 4, a top or plan View of a modified form ,of fastening device.

This invention relates to an improvement in devices for attaching window-shades to rollers, and particularly to that class in which the roller is longitudinally grooved, in which groove the end of the shade is placed and secured by a metal fastening device having prongs adapted to be driven through the shade into the roller.

The object of the invention is the production of a simple, inexpensive, and effective device for securing the shade to the roller; and the invention consists in the construction as hereinafter described, and particularly recited in the claims.

In carrying out my invention I employ a small plateA, of comparatively thin sheet metal, and on opposite sides of the same I form teeth a. This plate is longitudinally bowed, so that the distance between the teeth on opposite sides of the plate will not exceed in width the width of a longitudinal groove B, formed in the roller C, said grooves forming side .walls I), which may or may not be undercut. One end of the shade D is placed in the groove B, and over the edge of-the shade are placed the fastening-plates A. When thus located, the plates are struck so as to flatten in the groove and force the tongues thereof into the side walls of the groove. This flattening of the plate not only causes it to conform to the curvature of the roller, but also forces the prongs outward, so as to securely interlock the plate with the roller. Preferably and as shown in Fig. 3 of the drawings the fastening device is formed from a strip of metal having square ends d and inwardly-curved edges e, which produce the tongues a at each corner. This form of fastening may be readily cut from strips of sheet metal with the simplest mechanism and with a slight waste of material; but, if desired, the ends may be bowed either outwardly or inwardly, and instead of having inwardly-bowed sides, as described, the device may be formed as shown in Fig. 4,.in which the sides 6 are straight and the teeth a project outwardly on opposite sides at substantially right angles thereto.

I am aware that fastening devices provided with teeth adapted to be forced into a shaderoller have been used in connection with a roller having a longitudinal groove and also that long strips of spring metal have been used in conjunction with grooved rollers, and therefore do not wish to be understood as claiming, broadly, such as my invention; but,

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent, is-

1. A device for attaching window-shades to rollers consisting of a bowed plate formed with outwardly-projectiug teeth on opposite sides thereof, said teeth adapted when the plate is flattened to be forced inward at a tangent'to the circumference into the side walls of a longitudinal groove formed in a shade-roller, substantially as described.

2. A device for attaching window-shades to rollers consisting of a plate bowed to a smaller arc than an arc of a shade-roller, teeth on opposite sides of said plate adapted to enter the side walls of a longitudinal groove formed in a shade-roller whereby when the plate is flattened the teeth will be forcedinto a roller at a tangent tothe circumference, substantially as described. a I

3. A device for attaching window-shades to rollers consisting of a plate bowed to a smaller are than an arc of ashade-roller, said plate having teeth on opposite sides and specification in the presence of two subscribadapted when the plate is flattened to be ing Witnesses. forced inward at a tan ent to the circumference into the side walls of a longitudinal l LYON 5 groove formed in a shade-roller, substantially Witnesses:

as described. 0. W. GAINES,

NORMAN G. BARBER.

In testimony whereof I have signed this 

